They should have taken a leaf from 'Hairspray''s book..
... And made this into a spoof. It would have been so much better. "Hairspray" always kept its tongue firmly in cheek, "HSM" takes itself far too seriously.
The so-called humour isn't there. (What's with Sharpay or whatever she's called making that stupid neighing noise before she sings? Childish, not funny.)
And the stereotypes of Troy and Gabriella really needed the pee taking out of them by a clever producer.